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Finding the Fourth Proportional to 674,521.50, 930,851.83 and 368,610.77

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Solution

The fourth proportional to 674,521.50, 930,851.83 and 368,610.77 is: 508,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,521.50 : 930,851.83 = 368,610.77 : x
  2. Step 2: Convert to fraction form
    674,521.50/930,851.83 = 368,610.77/x
  3. Step 3: Cross multiply
    674,521.50x = 930,851.83 × 368,610.77
  4. Step 4: Simplify right side
    674,521.50x = 343,122,006,563.55
  5. Step 5: Solve for x
    x = 343,122,006,563.55/674,521.50
  6. Step 6: Final answer
    x = 508,689.51

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.